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Using plug-ins to generate notes using QR codes

一个新手Original: 2017-09-29 09:36:042732browse

Originally, I used several plug-ins to generate QR codes, but I always encountered various problems... Finally, I simply made one myself, and I will record it here.

Chrome plug-ins are very open! ! ! You only need to get the crx file, and then change the file extension to zip, and then you can unzip it. In the end, everything...

Reference for this study: http://open .chrome.360.cn/extension_dev/overview.html , the Javascript QR code generator used is https://github.com/davidshimjs/qrcodejs

1. Look first Let’s take a look at the directory structure

The most important thing is the file opened in the picture above: Manifest.json, which is the entry or description file of the extension. Some configurations used in this extension are explained in the picture above, so I won’t type them out.

Note: The last line of "permissions":["tabs"] needs to be noted. It lists the permissions required by the extension. I didn't do this at the beginning and couldn't get the url address... …

##　2. Upload the code

<!DOCTYPE html><html><head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>ddz qrcode</title>
    <style>
        .ddz {
            height: 101px;
            width: 100%;
            background-image: url(./images/ddz.png);
            background-position: center;
            background-repeat: no-repeat;
        }     
        #qrcode {
            width: 250px;
            height: 250px;
            margin-top: 15px;
        }
    </style>
    <script src="./lib/qrcode.min.js"></script>
    <script src="popup.js"></script></head><body>
    <p class="ddz"></p>
    <p id="qrcode"></p></body></html>

HTML page showing QR code

chrome.tabs.getSelected(null, function(tab) {    
        var QRCodeContainer = document.getElementById("qrcode");    
        var qrcode = new QRCode(QRCodeContainer, {
        width: QRCodeContainer.clientWidth,
        height: QRCodeContainer.clientHeight
    });    if (tab.url) {
        qrcode.makeCode(tab.url);
    }
});

Corresponding JS code

　3. Test

##　3.1. Enter: chrome:// in the browser extensions/ and enable "Developer Mode"

　3.2. Click "Load the unzipped extension..." Select your "Extension Directory" and it will be installed. Very convenient...

　3.3 Generate QR code test, as shown below

4. Finally package it into crx, click "Package extension...", and then still select the extension root directory (you can not select the private key file, he will Automatically generate a key? ? file), and finally "package the extension" and it's OK!

It ends here.

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